National Highway 17, commonly referred to as NH 17, now renumbered as
NH 66, is a busy National Highway in India that runs roughly north–south
along the western coast of India, parallel to western ghats. It
connects Panvel (near Mumbai) to Kochi in Kerala, passing through the
states of Maharashtra, Goa, Karnataka, and Kerala. It is the 7th longest
highway in India with 1,296 km.

It starts at Panvel, at the
junction of National Highway 4 (NH 4), and ends at Edappally,at the
junction of National Highway 47 (NH 47) near Kochi. NH17 mainly
traverses through the west coast of India, sometimes touching shores of
Arabian sea. The NH17 touches the Arabian Sea at Maravanthe in Karnataka
and Thalassery in Kerala. It passes through the Indian states of
Maharashtra, Goa, Karnataka and Kerala.